L76K GNSS Module for Raspberry Pi Pico

This add-on for your Raspberry Pi Pico supports GPS, BeiDou (BDS), GLONASS and QZSS systems, allows multi-system combined or single-system independent positioning.

The board offers fast positioning, high accuracy, and low power consumption, and supports AGNSS (Assisted GNSS), a technology that dramatically speeds up and improves satellite positioning by downloading critical orbital data via mobile networks or Wi-Fi rather than slow satellite links.

It has a built-in Low-Noise Amplifier (LNA) for improved reception sensitivity, and built-in Surface Acoustic Wave (SAW) Filter for enhanced noise reduction performance. There is a holder for an ML1220 rechargeable battery (battery not included - do not use single use batteries!), for preserving ephemeris information and hot starts. Four LEDs indicate the module operating status.

The board comes with a separate GPS antenna (see images).

Raspberry Pi Pico not included.

What's Onboard?

1. L76K module
2. Battery holder
   • Supports an ML1220 rechargeable cell for preserving ephemeris information and enabling hot starts
3. GNSS antenna connector
4. Raspberry Pi Pico header
5. Standby mode switch
6. GNSS configuration button
7. RT9193-33 power chip
8. Status indicators
   • RXD/TXD: UART TX/RX indicator
   • PPS: GPS status indicator
   • PWR: Power indicator

Features

• Designed for Raspberry Pi Pico
• Supports GPS, BeiDou (BDS), GLONASS and QZSS
• Combined or independent positioning modes
• AGNSS support
• Built-in Low-Noise Amplifier
• Built-in SAW filter
• ML1220 rechargeable cell holder (battery not included)
• Four status LEDs
• Separate GPS antenna included

Specifications

GNSS	GPS/GLONASS/BDS/QZSS
Chip platform	AT6558R
L1 band receiver channels	32 tracking / 72 acquisition
SBAS	N/A
A-GNSS	Supported
Acquisition sensitivity	-148dBm
Re-acquisition sensitivity	-160dBm
Tracking sensitivity	-162dBm
Cold start TTFF	30s autonomous 5.5s with AGNSS
Hot start TTFF	2s
Position accuracy	2.0m CEP
Speed accuracy	0.1m/s
Maximum acceleration accuracy	0.1m/s²
Timing accuracy	30ns
Communication interface	UART
Baud rate	4800–115200bps, 9600bps by default
Update rate	1Hz default, 5Hz maximum
Protocols	NMEA 0183, CASIC Proprietary Communication Protocol
Power supply voltage	5V
Overall current consumption	<40mA @ 5V, continue mode
Operating temperature	-40°C to 85°C
Dimensions	55.95 × 21.00mm

Resources

• Product wiki

Pinout

Package Contents

• 1x L76K GNSS Module for Raspberry Pi Pico
• 1x GPS Antenna

Raspberry Pi Pico not included